346 lines
12 KiB
C
346 lines
12 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2016-2017 Scott Shawcroft for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdint.h>
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#include <string.h>
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#include "extmod/vfs.h"
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#include "extmod/vfs_fat.h"
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#include "py/nlr.h"
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#include "py/compile.h"
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#include "py/frozenmod.h"
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#include "py/mphal.h"
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#include "py/runtime.h"
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#include "py/repl.h"
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#include "py/gc.h"
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#include "py/stackctrl.h"
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#include "lib/mp-readline/readline.h"
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#include "lib/utils/pyexec.h"
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#include "mpconfigboard.h"
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#include "supervisor/port.h"
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#include "supervisor/filesystem.h"
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// TODO(tannewt): Figure out how to choose language at compile time.
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#include "supervisor/messages/en-US.h"
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#include "supervisor/shared/autoreload.h"
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#include "supervisor/shared/rgb_led_status.h"
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#include "supervisor/serial.h"
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void do_str(const char *src, mp_parse_input_kind_t input_kind) {
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mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, src, strlen(src), 0);
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if (lex == NULL) {
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//printf("MemoryError: lexer could not allocate memory\n");
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return;
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}
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nlr_buf_t nlr;
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if (nlr_push(&nlr) == 0) {
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qstr source_name = lex->source_name;
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mp_parse_tree_t parse_tree = mp_parse(lex, input_kind);
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mp_obj_t module_fun = mp_compile(&parse_tree, source_name, MP_EMIT_OPT_NONE, true);
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mp_call_function_0(module_fun);
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nlr_pop();
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} else {
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// uncaught exception
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mp_obj_print_exception(&mp_plat_print, (mp_obj_t)nlr.ret_val);
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}
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}
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static char heap[PORT_HEAP_SIZE];
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void reset_mp(void) {
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reset_status_led();
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new_status_color(0x8f008f);
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autoreload_stop();
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// Sync the file systems in case any used RAM from the GC to cache. As soon
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// as we re-init the GC all bets are off on the cache.
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filesystem_flush();
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// Clear the readline history. It references the heap we're about to destroy.
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readline_init0();
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#if MICROPY_ENABLE_GC
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gc_init(heap, heap + sizeof(heap));
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#endif
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mp_init();
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mp_obj_list_init(mp_sys_path, 0);
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mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR_)); // current dir (or base dir of the script)
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mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_));
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mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_lib));
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// Frozen modules are in their own pseudo-dir, e.g., ".frozen".
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mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_FROZEN_FAKE_DIR_QSTR));
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mp_obj_list_init(mp_sys_argv, 0);
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}
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bool maybe_run(const char* filename, pyexec_result_t* exec_result) {
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mp_import_stat_t stat = mp_import_stat(filename);
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if (stat != MP_IMPORT_STAT_FILE) {
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return false;
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}
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serial_write(filename);
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serial_write(MSG_OUTPUT_SUFFIX);
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pyexec_file(filename, exec_result);
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return true;
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}
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bool start_mp(safe_mode_t safe_mode) {
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bool serial_connected_at_start = serial_connected();
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#ifdef CIRCUITPY_AUTORELOAD_DELAY_MS
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if (serial_connected_at_start) {
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serial_write(MSG_NEWLINE);
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if (autoreload_is_enabled()) {
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serial_write(MSG_AUTORELOAD_ON);
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} else if (safe_mode != NO_SAFE_MODE) {
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serial_write(MSG_SAFE_MODE_ON);
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} else if (!autoreload_is_enabled()) {
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serial_write(MSG_AUTORELOAD_OFF);
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}
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}
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#endif
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pyexec_result_t result;
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bool found_main = false;
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if (safe_mode != NO_SAFE_MODE) {
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serial_write(MSG_SAFE_MODE_NO_MAIN);
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} else {
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new_status_color(MAIN_RUNNING);
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found_main = maybe_run("code.txt", &result) ||
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maybe_run("code.py", &result) ||
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maybe_run("main.py", &result) ||
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maybe_run("main.txt", &result);
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reset_status_led();
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if (result.return_code & PYEXEC_FORCED_EXIT) {
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return reload_next_character;
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}
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}
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// Wait for connection or character.
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bool serial_connected_before_animation = false;
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rgb_status_animation_t animation;
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prep_rgb_status_animation(&result, found_main, safe_mode, &animation);
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while (true) {
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#ifdef MICROPY_VM_HOOK_LOOP
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MICROPY_VM_HOOK_LOOP
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#endif
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if (reload_next_character) {
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return true;
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}
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if (serial_connected() && serial_bytes_available()) {
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// Skip REPL if reload was requested.
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return serial_read() == CHAR_CTRL_D;
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}
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if (!serial_connected_before_animation && serial_connected()) {
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if (serial_connected_at_start) {
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serial_write(MSG_NEWLINE MSG_NEWLINE);
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}
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if (!serial_connected_at_start) {
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if (autoreload_is_enabled()) {
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serial_write(MSG_AUTORELOAD_ON);
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} else {
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serial_write(MSG_AUTORELOAD_OFF);
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}
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}
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// Output a user safe mode string if its set.
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#ifdef BOARD_USER_SAFE_MODE
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if (safe_mode == USER_SAFE_MODE) {
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serial_write(MSG_NEWLINE MSG_SAFE_MODE_USER_REQUESTED);
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serial_write(BOARD_USER_SAFE_MODE_ACTION);
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serial_write(MSG_NEWLINE MSG_SAFE_MODE_USER_EXIT);
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serial_write(BOARD_USER_SAFE_MODE_ACTION);
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serial_write(MSG_NEWLINE);
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} else
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#endif
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if (safe_mode != NO_SAFE_MODE) {
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serial_write(MSG_NEWLINE MSG_BAD_SAFE_MODE MSG_NEWLINE);
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if (safe_mode == HARD_CRASH) {
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serial_write(MSG_SAFE_MODE_CRASH MSG_NEWLINE);
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serial_write(MSG_SAFE_MODE_FILE_ISSUE MSG_NEWLINE);
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serial_write(MSG_SAFE_MODE_ISSUE_LINK MSG_NEWLINE);
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} else if (safe_mode == BROWNOUT) {
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serial_write(MSG_SAFE_MODE_BROWN_OUT_LINE_1 MSG_NEWLINE);
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serial_write(MSG_SAFE_MODE_BROWN_OUT_LINE_2 MSG_NEWLINE);
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}
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}
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serial_write(MSG_NEWLINE MSG_WAIT_BEFORE_REPL MSG_NEWLINE);
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}
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if (serial_connected_before_animation && !serial_connected()) {
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serial_connected_at_start = false;
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}
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serial_connected_before_animation = serial_connected();
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tick_rgb_status_animation(&animation);
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}
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}
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int __attribute__((used)) main(void) {
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// initialise the cpu and peripherals
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safe_mode_t safe_mode = port_init();
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rgb_led_status_init();
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// Stack limit should be less than real stack size, so we have a chance
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// to recover from limit hit. (Limit is measured in bytes.)
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mp_stack_ctrl_init();
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mp_stack_set_limit((char*)&_estack - (char*)&_ebss - 1024);
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#if MICROPY_MAX_STACK_USAGE
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// _ezero (same as _ebss) is an int, so start 4 bytes above it.
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mp_stack_set_bottom(&_ezero + 1);
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mp_stack_fill_with_sentinel();
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#endif
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// Create a new filesystem only if we're not in a safe mode.
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// A power brownout here could make it appear as if there's
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// no SPI flash filesystem, and we might erase the existing one.
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filesystem_init(safe_mode == NO_SAFE_MODE);
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// Reset everything and prep MicroPython to run boot.py.
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reset_port();
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reset_board();
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reset_mp();
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// Turn on autoreload by default but before boot.py in case it wants to change it.
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autoreload_enable();
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// By default our internal flash is readonly to local python code and
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// writable over USB. Set it here so that boot.py can change it.
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filesystem_writable_by_python(false);
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// If not in safe mode, run boot before initing USB and capture output in a
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// file.
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if (filesystem_present() && safe_mode == NO_SAFE_MODE && MP_STATE_VM(vfs_mount_table) != NULL) {
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new_status_color(BOOT_RUNNING);
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#ifdef CIRCUITPY_BOOT_OUTPUT_FILE
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// Since USB isn't up yet we can cheat and let ourselves write the boot
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// output file.
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filesystem_writable_by_python(true);
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FIL file_pointer;
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boot_output_file = &file_pointer;
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f_open(&((fs_user_mount_t *) MP_STATE_VM(vfs_mount_table)->obj)->fatfs,
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boot_output_file, CIRCUITPY_BOOT_OUTPUT_FILE, FA_WRITE | FA_CREATE_ALWAYS);
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filesystem_writable_by_python(false);
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#endif
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// TODO(tannewt): Re-add support for flashing boot error output.
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bool found_boot = maybe_run("settings.txt", NULL) ||
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maybe_run("settings.py", NULL) ||
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maybe_run("boot.py", NULL) ||
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maybe_run("boot.txt", NULL);
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(void) found_boot;
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#ifdef CIRCUITPY_BOOT_OUTPUT_FILE
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f_close(boot_output_file);
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filesystem_flush();
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boot_output_file = NULL;
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#endif
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// Reset to remove any state that boot.py setup. It should only be used to
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// change internal state thats not in the heap.
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reset_port();
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reset_mp();
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}
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// Start serial after giving boot.py a chance to tweak behavior.
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serial_init();
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// Boot script is finished, so now go into REPL/main mode.
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int exit_code = PYEXEC_FORCED_EXIT;
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bool skip_repl = true;
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bool first_run = true;
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for (;;) {
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if (!skip_repl) {
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// The REPL mode can change, or it can request a reload.
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bool autoreload_on = autoreload_is_enabled();
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autoreload_disable();
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new_status_color(REPL_RUNNING);
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if (pyexec_mode_kind == PYEXEC_MODE_RAW_REPL) {
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exit_code = pyexec_raw_repl();
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} else {
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exit_code = pyexec_friendly_repl();
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}
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if (autoreload_on) {
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autoreload_enable();
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}
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reset_port();
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reset_board();
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reset_mp();
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}
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if (exit_code == PYEXEC_FORCED_EXIT) {
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if (!first_run) {
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serial_write(MSG_SOFT_REBOOT MSG_NEWLINE);
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}
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first_run = false;
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skip_repl = start_mp(safe_mode);
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reset_port();
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reset_board();
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reset_mp();
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} else if (exit_code != 0) {
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break;
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}
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}
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mp_deinit();
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return 0;
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}
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void gc_collect(void) {
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// WARNING: This gc_collect implementation doesn't try to get root
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// pointers from CPU registers, and thus may function incorrectly.
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void *dummy;
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gc_collect_start();
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// This collects root pointers from the VFS mount table. Some of them may
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// have lost their references in the VM even though they are mounted.
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gc_collect_root((void**)&MP_STATE_VM(vfs_mount_table), sizeof(mp_vfs_mount_t) / sizeof(mp_uint_t));
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// This naively collects all object references from an approximate stack
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// range.
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gc_collect_root(&dummy, ((mp_uint_t)&_estack - (mp_uint_t)&dummy) / sizeof(mp_uint_t));
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gc_collect_end();
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}
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void NORETURN nlr_jump_fail(void *val) {
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HardFault_Handler();
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while (true) {}
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}
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void NORETURN __fatal_error(const char *msg) {
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HardFault_Handler();
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while (true) {}
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}
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#ifndef NDEBUG
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void MP_WEAK __assert_func(const char *file, int line, const char *func, const char *expr) {
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printf("Assertion '%s' failed, at file %s:%d\n", expr, file, line);
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__fatal_error("Assertion failed");
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}
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#endif
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